Using -Oline -j 96 W=1 C=1 redirect to /tmp/tmp.ZAXwLmm5tf and /tmp/tmp.EXdUZZfCJm
CC=ccache gcc
gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7)
Tree base:
e55a195f6e3c ("tcp: populate inet->cork.fl.u.ip6 in tcp_v6_connect()")
Skip baseline build, not the first patch and no Kconfig updates
Building the tree before the patch
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/ipv6/tcp_ipv6.o
  CC [M]  net/l2tp/l2tp_core.o
  CC [M]  net/ipv6/inet6_connection_sock.o
  CHECK   ../net/ipv6/inet6_connection_sock.c
  CHECK   ../net/l2tp/l2tp_core.c
  CHECK   ../net/ipv6/tcp_ipv6.c
  LD [M]  net/ipv6/ipv6.o
  GEN     kernel/kheaders_data.tar.xz
  CC [M]  kernel/kheaders.o
  CHECK   ../kernel/kheaders.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#550)
  LD [M]  kernel/kheaders.ko
  LD [M]  net/ipv6/ipv6.ko
  LD [M]  net/l2tp/l2tp_core.ko
Building the tree with the patch
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/ipv6/inet6_connection_sock.o
  CHECK   ../net/ipv6/inet6_connection_sock.c
  CC [M]  net/l2tp/l2tp_core.o
  CC [M]  net/ipv6/tcp_ipv6.o
  CHECK   ../net/l2tp/l2tp_core.c
  CHECK   ../net/ipv6/tcp_ipv6.c
  LD [M]  net/ipv6/ipv6.o
  GEN     kernel/kheaders_data.tar.xz
  CC [M]  kernel/kheaders.o
  CHECK   ../kernel/kheaders.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#550)
  LD [M]  kernel/kheaders.ko
  LD [M]  net/l2tp/l2tp_core.ko
  CC [M]  net/ipv6/ipv6.mod.o
  LD [M]  net/ipv6/ipv6.ko